Majstor's lab: dosing two liquids with one peristaltic - The Planted Tank Forum
 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 11-27-2010, 08:18 PM Thread Starter
Planted Tank Obsessed
 
PTrader: (0/0%)
Join Date: Jun 2010
Location: croatia
Posts: 311
Majstor's lab: dosing two liquids with one peristaltic

Peristaltic pump is considered expensive and heres the way to use one pump for dosing two liquids. General idea is to dose one liquid while rotating pump clockwise and dose the other liquid with rotating pump anticlockwise direction. We need:

1 DC peristaltic pump
2 power sources (cellular phone chargers or such)
2 T-pieces
4 one-way safety valves

In attachment is my state of the art graph and here is how it works:
One power source connect with pump the right way, aka "+" with "+" and "-" with "-" pole on pump. The other power source connect the wrong way, "+" with "-" poles and motor will rotate anti clockwise. Both powersources put on separate timers and program as needed. Red arrows shows possitions of one-way valves and their direction.
When pump rotates clockwise the liquid wil go from MACRO-IN to MACRO-OUT and when pump rotates anticlockwise , liquid will go from MICRO-IN to MACRO-OUT. There will be some mixing of fluids but that can be fixed:

1. Keep T-pieces and one-way valves close to pump, that lowers amount of mixing liquids
2. Keep liquids well dilluted. Mine macro solution in dilluted 3x in difference to default EI solution
3. Use ascorbic acid and pottasium sorbate to stabilise solution

I dont have it function it yet, waiting for some parts, this is just White Paper

God bless
Attached Thumbnails
Click image for larger version

Name:	untitled.jpg
Views:	50
Size:	25.0 KB
ID:	25379  

majstor76 is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 11-27-2010, 08:38 PM
Children Boogie
 
mistergreen's Avatar
 
PTrader: (13/100%)
Join Date: Dec 2006
Location: Cincinnati
Posts: 16,743
Have you made this?

My question is, say 'Macro-in' is being pump:
If the 'micro out' is in the water, it would suck in the water with the 'macro-in'? Or if 'micro-out' has air at the end, the pump will not work.

Neat idea.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
mistergreen is offline  
post #3 of 7 (permalink) Old 11-28-2010, 03:05 AM Thread Starter
Planted Tank Obsessed
 
PTrader: (0/0%)
Join Date: Jun 2010
Location: croatia
Posts: 311
Quote:
Originally Posted by mistergreen View Post
Have you made this?

My question is, say 'Macro-in' is being pump:
If the 'micro out' is in the water, it would suck in the water with the 'macro-in'? Or if 'micro-out' has air at the end, the pump will not work.

Neat idea.
No, i have not made this. As i said im waiting some things from E.b.a.y

Ummm, these blue containers are not aquarium , it represents containers with liquid (macro or micro solution or whatever). So, macro-in would be container with macro and macro-out would lead to aquarium. That round thing in middle is the pump
majstor76 is offline  
 
post #4 of 7 (permalink) Old 11-28-2010, 03:30 AM
Children Boogie
 
mistergreen's Avatar
 
PTrader: (13/100%)
Join Date: Dec 2006
Location: Cincinnati
Posts: 16,743
Yes, but where will the micro-out go? into the aquarium?
Well, you won't see how it works until you make it.


This is what I mean, when you're pumping macro-out, you're pulling in water from the tank too.

Oh, and also note that not all motors are made so it can change direction.
Attached Images
 


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
mistergreen is offline  
post #5 of 7 (permalink) Old 11-28-2010, 08:01 AM Thread Starter
Planted Tank Obsessed
 
PTrader: (0/0%)
Join Date: Jun 2010
Location: croatia
Posts: 311
This is new version of graph with added aquarium to better understand.

Water cant go from aquarium back to the system, thats why we use 4 one-way valves.
In your graph you have turned position of valve which go to micro-out and in that position it would really pull water of aquarium but in my graph valve is positioned differently and it blocks water from aquarium to return to the system. Red arrows represents position and *orientation* of one-way valves, they are not just representation of water flow.
Attached Thumbnails
Click image for larger version

Name:	untitled.jpg
Views:	35
Size:	26.3 KB
ID:	25389  

majstor76 is offline  
post #6 of 7 (permalink) Old 11-28-2010, 03:55 PM
Children Boogie
 
mistergreen's Avatar
 
PTrader: (13/100%)
Join Date: Dec 2006
Location: Cincinnati
Posts: 16,743
Ah, I see, that's what the 1-way valve (check valve) is for... This is neat.
Get quality valves, not the ones from the fish store


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
mistergreen is offline  
post #7 of 7 (permalink) Old 11-28-2010, 05:31 PM Thread Starter
Planted Tank Obsessed
 
PTrader: (0/0%)
Join Date: Jun 2010
Location: croatia
Posts: 311
Quote:
Originally Posted by mistergreen View Post
Ah, I see, that's what the 1-way valve (check valve) is for... This is neat.
Get quality valves, not the ones from the fish store
I have good experience with cheap one-way valves from e.b.a.y (4 pieces for 2$) so in this low-easy application its not really neded to go for better , metal ones. Metal ones i use in protecting co2 equipment where failure would cost me much.

But this setup can also be used with syringes, for people who dont want do to full auto, but instead some semi automatic where is only needed push-pull move of pistons, without manually taking out syringes and containers from cabinet under aquarium. This syringes can be be behind aquarium, easily reachable and dosing would be easy as pie
Attached Thumbnails
Click image for larger version

Name:	untitled2.JPG
Views:	33
Size:	23.2 KB
ID:	25398  

majstor76 is offline  
Reply

Tags
None

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome